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The Eminence Commonwealth 12" Guitar Speaker delivers warm and rich tone that is very clean and well-defined. This Eminence speaker has a very full and smooth presence. Very little cone break-up, but likes Overdrive. Clean, warm, full, non-distorted, unadulterated guitar tone for all genres.

Eminence Commonwealth 12" 225W Guitar Speaker Features:

Voice Coil Diameter: 4", 101.6mm
Magnet Weight: 109 oz.
Power Rating.: 225W
Sensitivity: 100

Eminence Commonwealth 12" 225W Guitar Speaker Specifications:

Specification
Nominal Basket Diameter: 12", 304.8mm
Nominal Impedance*: 8 ohms
Power Rating**: 225W
Resonance: 50Hz
Usable Frequency Range: 50Hz-4kHz
Sensitivity***: 100
Magnet Weight: 109 oz.
Gap Height: 0.29", 7.2mm
Voice Coil Diameter: 4", 101.6mm

Thiele & Small Parameters
Resonant Frequency (fs): 50Hz
DC Resistance (Re): 6.34
Coil Inductance (Le): 0.46mH
Mechanical Q (Qms): 6.61
Electromagnetic Q (Qes): 0.35
Total Q (Qts): 0.33
Compliance Equivalent Volume (Vas): 90 liters / 3.2 cu. ft.
Peak Diaphragm Displacement Volume (Vd): 36cc
Mechanical Compliance of Suspension (Cms): 0.24mm/N
BL Product (BL): 15.7 T-M
Diaphragm Mass inc. Airload (Mms): 43 grams
Efficiency Bandwidth Product (EBP): 143
Maximum Linear Excursion (Xmax): 0.7mm
Surface Area of Cone (Sd): 519.5 cm2

Mounting Information
Recommended Enclosure Volume:
Sealed: Acceptable
Vented: Acceptable
Overall Diameter: 12.28", 312.0mm
Baffle Hole Diameter: 11.08", 281.3mm
Front Sealing Gasket: fitted as standard
Rear Sealing Gasket:
Mounting Holes Diameter: 0.27", 6.8mm
Mounting Holes B.C.D.: 11.69", 297.0mm
Depth: 5", 127mm
Net Weight: 21.5 lbs., 9.8 kg
Shipping Weight: 23.2 lbs., 10.5 kg

Materials of Construction
Aluminum voice coil
Polyimide former
Ferrite magnet
Vented core
Die-cast aluminum basket
Paper Cone
Cloth cone edge
Aluminum dust cap

*Please inquire about alternative impedances.
**Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, non-temperature controlled environment.
***The average output across the usable frequency range when applying 1W/1M into the nominal impedance. Ie: 2.83V/8ohms, 4V/16ohms.
Eminence response curves are measured under the following conditions: All speakers are tested at 1w/1m using a variety of test set-ups for the appropriate impedance " LMS using 0.25" supplied microphone (software
calibrated) mounted 1m from wall/baffle " 2ft. X 2ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction " Hafler P1500 Trans-Nova amplifier " 2700 cu.ft. chamber with
fiberglass on all six surfaces (three with custom-made wedges)

Eminence Commonwealth 12" 225W Guitar Speaker

7 year parts and labor warranty against defects on all speakers sold under Eminence name.

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